Shower arm



FIG. 1 is a perspective view of a shower arm showing our new design;

FIG. 2 is a front elevational view thereof; the rear being a mirror image thereto;

FIG. 3 is a left side elevational view thereof; the right side being a mirror image thereto;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a perspective view of a shower arm, showing the engagement of the shower arm with the bath accessory posts.

The dotted lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a shower arm, as shown and described. 